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CHAS. S. BRUFF, OF BALTIMORE, MARYLAND.

sAsHlsUPPoRTEI.

Specification of Letters Patent No. 15,557, dated August 19, 1856.

To all 'whom it may concern.'

Be it known that I. CHARLES S. Battre, ot' the city ot Baltimore. in the State of Maryland, have invented a new and Improved Stop for Holding- "Vindow-qas'h When Hoisted or Lowered andl doherebydeelare that thefollowiirtg` is a full and exaet deseription, ret'er'enee, being had tothe accompanying' drawings and to the letters `ot ret'- erenee 'marked thereon.

The nature of my invention eonsists in providing one edge of a sash with a raek, formed by eorrugating a strip ot' Zinc or other metal. into a series ot irregular teeth, that is-one side longer than the other, (or using a Cast rack ot same pattern), so that the sash will hoist with lgreater ease than itwill lower and inserting` a spring in the janib. with a tooth on the end. eatehing into said corrugations. Said raek being secured hy brads in :1 rabhet ot' the sash. and the spring in a score out out of the jamb to reeeive it. secured'by serews: said rank and spring being' opeiiated upon by simply hoisting or drawing down the sash. as it` sup- .plied with weights tte. answers the saine purpose ot' weights. cords. &e.. at one eighth their expense. and is tar more durable.

To enable others skilled in the art to make and use my invention. l will proc-.eed to describe its construetion and operation.

I eonstruel my sash in the usual way, and trom the haelt edge on one side, as aty A, Figs. l and 2. l talte a rabloet (C) the whole length of the stile. of the width ot the rack desired, and about t-wiee the depth of the, eorrugations of the rack. ln said rahbet -plant my eorrugated rack B andseeure it to the sash by means ot' sogar tat-ks or beads, at about every 3 or 4 eorrugations. spring F, is then secured by strews into a score E eut out of the jamb, ot depth slittieient to allow it to work free. Said rack is bompcsed .of aseries ot teeth, with one side about pr. ct. longer than the other, that the ineuuauon m hoisting may be much easier than in lowering;` and said corrugations are made in said shape by` simply passing the strips of metal betweenfj'two cog wheels. geared into eachother, and set-'loose,

eommon'hoop iron, hammered to a temper, with the end turned over outward, to form a tooth, to catch into the corrugations, and keep the sash in itsposition. Said springs are inserted near the top of the lower sash, and at the bottom of the upper sash. The tooth of the spring'should be fledsmooth. The rabbet can be made of less depth than betere deseribed, vby insert-ing the spring deeper into the jamb. Said rack can also b( applied to the face of the sash, as at Fig. 8, and the rabbet D taken out of the front, on both sides. and the spring. F, inserted in planed otl-` in consequence ot `the.'settlement of the house, as Figs. 3 and 4. llVhen these raeks and springs are properly put on7 they perte-rm the saine dut-y as weights, pulleys, eords and boxing, and can' be furnishedat, one-fifth the cost, and are more durable; and are applicable to old as well as new windows; they cannot be tripped suddenly, and the sash eau be taken out to wash.

What I claim as my invention, and desire to secure by Letters Patent is- The applieation 'of vthe above described raelt. corrugated in the particular form deseribed, to one edge of a sash, 'and the metal sprint,Y catching into said .eorrugations, seeured in the jamhs, or /on the stop bead, as

'Nitnessesc ,lain-:s H. HOGG, .Tous ARMSTRONG, Jr.

and operated upon by "afA crank or' other; power. The ,spring E 1s' made-0f 'brass 0ra seore E, taken out of the stop bead, in v eases where the edge of the sash has been' 5 beto're described, torthe purposeV of. hold- The. 

